http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb.html Ribbed centerbulb is the most versatile type of waterstop available. The centerbulb accommodates lateral, transverse, and shear movement. Ribbed centerbulb can be used in expansion, construction, and control joints. Ribbed centerbulb waterstops provide superior anchoring abilities and a long fluid-flow path because of the multiple ribs on the exterior flanges. Under stress, the multiple ribs will distort less than a dumbbell type waterstop. This is because the stress is first applied to the inward-most anchoring rib, and decreases to the subsequent ribs. The centerbulb allows for joint movement beyond the ultimate elongation of the material (530%), without causing distortion to anchoring ribs. All of our ribbed centerbulb waterstops are manufactured with a 9/16” outer diameter centerbulb, which is the largest in the industry. This centerbulb, coupled with the outstanding mechanical properties of our proprietary TPV elastomer (ultimate elongation, tensile strength, etc.), provides for unsurpassed joint movement and sealing abilities. Like all our thermoplastic vulcanizate waterstops, Earth Shield ribbed centerbulb waterstop can be heat-welded using a standard waterstop splicing iron. This allows for easy field fabrications, and allows the waterstop to function as a continuous, homogeneous, fluid-tight diaphragm. Waterstop change of directions can be purchased along with straight roll stock, and custom, fit-to-print waterstop modules are produced to order. Prefabricated ells, tees, tank pads, column fittings, and many others are in stock and ready to ship. Complete PDF & DWG Details can be found here Earth Shield Thermoplastic Vulcanizate Waterstop Product Catalog Earth Shield Thermoplastic Vulcanizate Waterstop Master Spec CSI 3-part Long Form in PDF format   http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb.html#0 7d418980-d5e9-4a5c-a62c-1262b324fe57 http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/ribbedcenterbulb/thumb.jpg http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/ribbedcenterbulb/micro.jpg <div style="padding: 0px; " class="style_External_194_48"><div class="style_5"><p style="padding-top: 0pt; " class="paragraph_style_4"><span class="style_6">JP636</span><br/></p><p class="paragraph_style_4">Expansion and<br/></p><p style="padding-bottom: 0pt; " class="paragraph_style_4">Construction Joint</p></div></div> http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb.html#1 81af8115-3f89-4fe7-bead-89cfee746d93 http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/jp636waterstop_angled/thumb.jpg http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/jp636waterstop_angled/micro.jpg <div style="padding: 0px; " class="style_External_194_48"><div class="style_5"><p style="padding-top: 0pt; " class="paragraph_style_4"><span class="style_6">JP636</span><br/></p><p style="padding-bottom: 0pt; " class="paragraph_style_4">6” Ribbed Centerbulb Waterstop Photo</p></div></div> http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb.html#2 f8b4bc94-50b7-434b-96ac-73895a904e14 http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/IMG_1758/thumb.jpg http://www.jpspecialties.com/Waterstop_for_Concrete_Joints/ribbedcenterbulb_files/Media/IMG_1758/micro.jpg <div style="padding: 0px; " class="style_External_194_48"><div class="style_5"><p style="padding-top: 0pt; " class="paragraph_style_4"><span class="style_6">Brass Eyelets</span><br/></p><p style="padding-bottom: 0pt; " class="paragraph_style_4">(Factory installed) are available for all profiles</p></div></div>